Two-Wire interface for digital microphones

Wouter Groothedde (Inventor), Eric A.M. Klumperink (Inventor), Bram Nauta (Inventor), Rudolphe Gustave Hubertus Eschauzier (Inventor), Nico van Rijn (Inventor)

    Research output: Patent

    46 Downloads (Pure)

    Abstract

    A two-wire interface for a digital microphone circuit includes a power line and a ground line. The interface utilizes the ground line as a "voltage active line" to transmit both clock and data signals between the digital microphone circuit and a receiving circuit. The digital microphone circuit detects the clock signal on the voltage active line and uses the detected clock signal to operate an ADC to provide digital data. The digital data is used to selectively drive current back to the receiving circuit over the voltage active line. The receiving circuit detects the transmitted data by monitoring the voltage associated with a line termination. The impedance associated with the line termination is switched by the receiver circuit to modulate the clock signal on the voltage active line.
    Original languageUndefined
    Patent numberUS6853733 B1
    Publication statusPublished - 8 Feb 2005

    Keywords

    • IR-102618
    • EWI-27482

    Cite this

    Groothedde, W., Klumperink, E. A. M., Nauta, B., Eschauzier, R. G. H., & van Rijn, N. (2005). Two-Wire interface for digital microphones. (Patent No. US6853733 B1).
    Groothedde, Wouter (Inventor) ; Klumperink, Eric A.M. (Inventor) ; Nauta, Bram (Inventor) ; Eschauzier, Rudolphe Gustave Hubertus (Inventor) ; van Rijn, Nico (Inventor). / Two-Wire interface for digital microphones. Patent No.: US6853733 B1.
    @misc{98bb74706d3145448f37606a20c43306,
    title = "Two-Wire interface for digital microphones",
    abstract = "A two-wire interface for a digital microphone circuit includes a power line and a ground line. The interface utilizes the ground line as a {"}voltage active line{"} to transmit both clock and data signals between the digital microphone circuit and a receiving circuit. The digital microphone circuit detects the clock signal on the voltage active line and uses the detected clock signal to operate an ADC to provide digital data. The digital data is used to selectively drive current back to the receiving circuit over the voltage active line. The receiving circuit detects the transmitted data by monitoring the voltage associated with a line termination. The impedance associated with the line termination is switched by the receiver circuit to modulate the clock signal on the voltage active line.",
    keywords = "IR-102618, EWI-27482",
    author = "Wouter Groothedde and Klumperink, {Eric A.M.} and Bram Nauta and Eschauzier, {Rudolphe Gustave Hubertus} and {van Rijn}, Nico",
    year = "2005",
    month = "2",
    day = "8",
    language = "Undefined",
    type = "Patent",
    note = "US6853733 B1",

    }

    Groothedde, W, Klumperink, EAM, Nauta, B, Eschauzier, RGH & van Rijn, N 2005, Two-Wire interface for digital microphones, Patent No. US6853733 B1.

    Two-Wire interface for digital microphones. / Groothedde, Wouter (Inventor); Klumperink, Eric A.M. (Inventor); Nauta, Bram (Inventor); Eschauzier, Rudolphe Gustave Hubertus (Inventor); van Rijn, Nico (Inventor).

    Patent No.: US6853733 B1.

    Research output: Patent

    TY - PAT

    T1 - Two-Wire interface for digital microphones

    AU - Groothedde, Wouter

    AU - Klumperink, Eric A.M.

    AU - Nauta, Bram

    AU - Eschauzier, Rudolphe Gustave Hubertus

    AU - van Rijn, Nico

    PY - 2005/2/8

    Y1 - 2005/2/8

    N2 - A two-wire interface for a digital microphone circuit includes a power line and a ground line. The interface utilizes the ground line as a "voltage active line" to transmit both clock and data signals between the digital microphone circuit and a receiving circuit. The digital microphone circuit detects the clock signal on the voltage active line and uses the detected clock signal to operate an ADC to provide digital data. The digital data is used to selectively drive current back to the receiving circuit over the voltage active line. The receiving circuit detects the transmitted data by monitoring the voltage associated with a line termination. The impedance associated with the line termination is switched by the receiver circuit to modulate the clock signal on the voltage active line.

    AB - A two-wire interface for a digital microphone circuit includes a power line and a ground line. The interface utilizes the ground line as a "voltage active line" to transmit both clock and data signals between the digital microphone circuit and a receiving circuit. The digital microphone circuit detects the clock signal on the voltage active line and uses the detected clock signal to operate an ADC to provide digital data. The digital data is used to selectively drive current back to the receiving circuit over the voltage active line. The receiving circuit detects the transmitted data by monitoring the voltage associated with a line termination. The impedance associated with the line termination is switched by the receiver circuit to modulate the clock signal on the voltage active line.

    KW - IR-102618

    KW - EWI-27482

    M3 - Patent

    M1 - US6853733 B1

    ER -

    Groothedde W, Klumperink EAM, Nauta B, Eschauzier RGH, van Rijn N, inventors. Two-Wire interface for digital microphones. US6853733 B1. 2005 Feb 8.